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This article describes learning activities of the HIIT PE addressing SHAPE America National Physical Education Standard #3, how student interest is obtained, and the variety of learning environments in which they can be implemented. The article also offers examples of learning activities, cognitive assessments, and a scope and sequence for teaching HIIT PE. These examples can easily be adapted for implementation across the K-12 levels. [ABSTRACT FROM AUTHOR]

Physical literacy has become a focus in school physical education and youth sports programs. Despite the global attention, physical literacy remains an elusive concept in regards to its definition, assessment, and interventions. In this article, we review the existing scholarship on physical literacy definitions, assessments, and interventions. We first present the historic evolution of physical literacy and the various definitions, followed by a synthesis of its underlying components. We next summarize the current physical literacy assessments along with a commentary on the challenges to accurately and feasibly assess the concept. Following this we describe the characteristics and efficacy of the existing physical literacy-related interventions in children and adolescents. The article concludes with an interpretive discussion of the findings to stimulate future efforts of research, practice, and policy for fostering physically literate individuals. [ABSTRACT FROM AUTHOR]

Deck tennis is an educational game that builds confidence and serves as a helpful introductory unit to net sports. This article discusses the history and rules of deck tennis and how it serves as a prerequisite to more complex striking with implement games. Additionally, it provides learning activities, motor and cognitive assessments, and a scope and sequence for teaching deck tennis. [ABSTRACT FROM AUTHOR]

An important goal of physical education (PE) is to educate children to become physically literate and active of their own accord. This study capitalized on examining the roles of students' attitudes toward PE and physical activity and fitness (PAF) knowledge in physical activity and sedentary behavior participation. Students from a public middle school in a Midwestern state in the United States of America responded to two surveys. One survey consisted of demographic and PAF knowledge questions for middle school students, and the other survey included the Attitude Toward Physical Education Questionnaire and the Youth Activity Profile. Structural equation models showed that perceived enjoyment and perceived usefulness, as affective and cognitive dimensions of attitude toward PE respectively, demonstrated small effects on physical activity and sedentary behavior, while perceived enjoyment further showed a moderate effect on PAF knowledge, after controlling for gender and grade. These findings indicate the need to deliberately foster students' positive attitudes toward PE in middle school years. It is argued that future pedagogy research on youth physical activity should also include sedentary behavior as a focal variable. [ABSTRACT FROM AUTHOR]

The purpose of this study was to examine the associations between fundamental motor skills (FMS; including locomotor and object-control skills), moderate-to-vigorous physical activity (MVPA), and sedentary behavior among young Hispanic and non-Hispanic children. Using the prospective research design spanning one academic school year, we recruited 671 children (6.96 ± 1.6 years, 46% girls) from four primary schools in North Texas, 300 of whom were Hispanic and 371 non-Hispanic children, with 90% of the Hispanic and 74% of the non-Hispanic children from low-income families. All participants completed the PE Metrics™ FMS assessment and wore Actical accelerometers. Hispanic children demonstrated a lower level of MVPA on school days than their non-Hispanic peers. After adjusting for sociodemographic variables, both locomotor and object-control skills significantly predicted school-based MVPA for the non-Hispanic groups, while only object-control skills significantly predicted MVPA for the Hispanic group. For both ethnic groups, locomotor skills significantly predicted school-based sedentary behavior. The findings shed light on future motor competence–based interventions for physical activity promotion and obesity prevention among young Hispanic as well as non-Hispanic children. [ABSTRACT FROM AUTHOR]

The purpose of this study was to examine Greek preservice physical education (PE) teachers' presuppositions, beliefs and mental models about the reproduction and production teaching styles. The participants were 16 preservice PE teachers (10 males, six females). A qualitative methodology was used with data collected using semi-structured interviews. A multi-level analysis process using open coding and axial coding was sequentially conducted. Findings revealed two generative mental models about teaching styles. For the first mental model (n = 5), learning is considered as a transmissive and unidimensional (i.e. one goal pursued at a time) process. Presuppositions supported by this mental model urge the preservice teachers to believe that the reproduction teaching styles promote effective learning, class control, students' safety and discipline. For the second mental model (n = 11), learning is viewed as a constructivist and multidimensional (i.e. multiple goals pursued at a time) process. Presuppositions supported by this mental model urge the participants to believe that the production teaching styles effectively promote students' learning, critical thinking, responsibility, motivation, autonomy and discipline. The aforementioned mental models highlight the developmental nature of preservice PE teachers' learning concerning the production and the reproduction teaching styles. These mental models reveal the diversity of PE preservice teachers' understanding of the teaching and learning processes. Furthermore, findings support Vosniadou's assumption that learners come to formal education not as a tabula rasa but holding a naive understanding about the world. [ABSTRACT FROM AUTHOR]

Highlights • A multi-wire capacitance probe measurement device was developed. • Water layer height and void fraction at different circumferential positions was measured. • Water layer height and its variations with time at different circumferential positions were analyzed. • Void fraction prediction correlations were compared and best performing correlation was recommended. Abstract The void fraction of stratified gas-liquid flow is crucial to determine mixture density, calculate pressure gradient, obtain phase flow rate, analyze flow structure and monitor flow processes. The measurement and prediction of void fraction is of particular interest in many industrial processes. The objective of this paper is to develop a new method to accurately measure the void fraction in the stratified gas-liquid flow. A measurement device named multi-wire capacitance probe which is based on the single-wire capacitance probe is developed. The device can obtain the average void fraction as well as the local void fraction by measuring the water layer height at different circumferential positions of the pipe. We analyze the water layer height and its variations with time at different circumferential positions under different superficial gas and liquid velocity. We also discuss the local void fraction at different circumferential position and the average void fraction of the circular cross section by measuring the water layer height. Comparisons of ten existing prediction correlations using the measured void fraction are made. The correlation of Armand–Massina is recommended to predict the void fraction of stratified gas-liquid flow. The relative error of the void fraction predicted by this correlation is within ±3.0% under the 95.65% confidence level. [ABSTRACT FROM AUTHOR]

Abstract To gain a deeper understanding of the performance of V-Cone meter in low pressure wet gas measurement, the over-reading of the V-Cone meter was experimentally investigated in the present study. The equivalent diameter ratio of the V-Cone meter is 0.55. The experimental fluids were air and tap water. The operating pressure and the gas volume fraction ranged from 0.1 MPa to 0.4 MPa and 97.52%–100%, respectively. The results showed that the existing V-Cone wet gas correlation, which was developed for the medium and high pressure wet gas cannot be well extended to the low pressure conditions. The Chisholm exponent monotonically decreased with the ratio of liquid-to-gas mass flow rate increasing, and was almost not affected by the gas to liquid density ratio and the gas densiometric Froude number in the present test ranges. A measurement correlation dedicated for the low pressure wet gas was developed. In the present cases, the relative deviation of the gas mass flow rate predicted by the new correlation was within ±4.0% and ±3.0% under the 95% and 90% confidence level, respectively; the average relative deviation was 0.046%. Our results provide insights into the measurement performance of V-Cone meter in low pressure wet gas and may help to develop a more comprehensive wet gas correlation. Graphical abstract Fitting curve between m l /m g and n. Image 1 Highlights • V-Cone meter over-reading in low pressure wet gas measurement was investigated. • Effects of parameters on Chisholm exponent were analyzed. • A measurement correlation in low pressure wet gas was developed. [ABSTRACT FROM AUTHOR]

This study examined the effect of cognitive demand on situational interest and performance using running tasks in physical education. Adolescents (N = 179) participated in a field study involving three different levels of cognitive demand. Running performances and situational interest were measured four times with a testing interval of seven days. Results from multivariate analyses of covariance suggested that cognitive demand had a significant effect on situational interest and running performances. Higher cognitive demand led to higher levels of situational interest. Situational interest was weakly or moderately correlated with running performances (|r| = .17−.40), yet students reported significantly lower performance when the perceived interest was the highest. These findings suggest the importance of designing instructional tasks with moderate cognitive demand to optimally preserve situational interest and performance in physical education. The findings also help further conceptualise the relations among cognitive demand, situational interest and performance. [ABSTRACT FROM AUTHOR]

A valid test measuring children's energy-balance (EB) knowledge is lacking in research. This study developed and validated the energy-balance knowledge test (EBKT) for fourth and fifth grade students. The original EBKT contained 25 items but was reduced to 23 items based on pilot result and intensive expert panel discussion. De-identified data were collected from 468 fourth and fifth grade students enrolled in four schools to examine the psychometric properties of the EBKT items. The Rasch model analysis was conducted using the Winstep 3.65.0 software. Differential item functioning (DIF) analysis flagged 1 item (item #4) functioning differently between boys and girls, which was deleted. The final 22- item EBKT showed desirable model-data fit indices. The items had large variability ranging from -3.58 logit (item #10, the easiest) to 1.70 logit (item #3, the hardest). The average person ability on the test was 0.28 logit (SD = .78). Additional analyses supported known-group difference validity of the EBKT scores in capturing gender- and grade-based ability differences. The test was overall valid but could be further improved by expanding test items to discern various ability levels. For lack of a better test, researchers and practitioners may use the EBKT to assess fourth- and fifth-grade students' EB knowledge. [ABSTRACT FROM AUTHOR]

Obesity prevention and control have been identified as top public health priorities in modern societies. Sport and exercise science researchers from multiple perspectives (e.g. behavioral, pedagogical, psychological, and physiological) have been active contributors addressing this topic. This paper examines the importance of energy balance (EB) knowledge in enabling behaviors associated with weight management in youth (e.g. physical activity and dietary behaviors). Relevant research studies were searched using ERIC, Proquest, PubMed, and Scopus. A total of 48 articles that met the inclusion criteria were identified and retrieved. The research findings of the included articles were summarized after being thoroughly reviewed. The paper reveals mixed findings about the association between EB knowledge and behaviors, reinforcing the importance of developing knowledge through education. The literature review further identifies that there is inadequate knowledge about EB among youth, coinciding with a national call for action to enhance EB education in schools. The knowledge inadequacy is related to two plausible reasons: the science of EB is still evolving and systematic EB education is lacking in schools. In addition, while some school-based EB education programmes are available, many of these programmes are expensive and lack generalizability and sustainability over time. The paper concludes with a proposal to enhance EB education using concept-based physical education. [ABSTRACT FROM AUTHOR]

The purpose of the study was to quantify the contributions of physical education, exergaming (active video games that also are a type of exercise), recess, lunch break and after-school time segments to children’s daily physical activity and sedentary behaviours. Participants were 138 second and third graders (71 girls) who attended 20-min recess and 75-min lunch time daily, 25-min regular physical education or exergaming-based classes being alternated daily. The after-school period was defined as 3:20–10:00pm. Physical activity was assessed via accelerometry and the dependent variables were children’s time spent in moderate-to-vigorous physical activity (MVPA), light physical activity and sedentary behaviour. Children’s percentages of time spent in MVPA (P < .001; except for the difference between exergaming and lunch break:P = .63), light physical activity (P < .001) and sedentary behaviour (P < .001) differed significantly across the time segments (i.e., physical education/exergaming, recess, lunch break and after-school). Additionally, children accumulated significantly more MVPA (t = 10.22,P < .001) but less light physical activity (t = −3.17,P = .002) and sedentary behaviour (t = −3.91,P < .001) in physical education than in exergaming. Overall, physical education was more effective in generating MVPA than other segments over the school day. The after-school segment holds potential as an avenue for promoting children’s MVPA, as this long period could be better utilised to organise structured physical activity. [ABSTRACT FROM AUTHOR]

Schools are positioned to play a key role in nurturing students with knowledge and behaviours associated with healthful living. Our study examined the effects of an intervention on energy balance (EB) knowledge. Twelve 6th and 7th grade classrooms (n = 140) were assigned to receive either two standardised lessons on EB or a combined intervention that featured the same EB lessons, integrated with self-monitoring technology. EB knowledge was pre- and post-measured using a standardised written test, while the situational interest was measured at the end of experiment. Repeated measure analysis of variance and multivariate analysis of variance were conducted, to capture the differences in EB knowledge by time and group, and situational interest by group, respectively. Both groups significantly enhanced EB knowledge over time (F1,112 = 11.85; p = .001; η2 = .10), but the combined group demonstrated a greater increase (F1,112 = 5.36; p = .02; η2 = .05). An item-by-item mean comparison of EB knowledge and correct percent scores confirmed the above result (i.e. combined group versus education group: 7% versus 2% EB knowledge increase).The two groups were equally motivated to participate in the experiment, showing similar levels of total interest (education group: M/SD = 4.00/.68; combined group: M/SD = 4.17/.74; p = .18). The research findings and their implications are discussed. [ABSTRACT FROM AUTHOR]

The purpose of the study is to examine the associations of youth physical activity and screen time with weight status and cardiorespiratory fitness in children and adolescents, separately, utilizing a nationally representative sample. A total of 1,113 participants (692 children aged 6–11 yrs; 422 adolescents aged 12–15 yrs) from the 2012 NHANES National Youth Fitness Survey. Participants completed physical activity and screen time questionnaires, and their body mass index and cardiorespiratory fitness (adolescents only) were assessed. Adolescents completed additional physical activity questions to estimate daily MET minutes. Children not meeting the screen time guideline had 1.69 times the odds of being overweight/obese compared to those meeting the screen time guideline, after adjusting for physical activity and other control variables. Among adolescent, screen time was significantly associated with being overweight/obese (odds ratio = 1.82, 95% confidence interval: 1.06–3.15), but the association attenuated toward the borderline of being significant after controlling for physical activity. Being physically active was positively associated with cardiorespiratory fitness, independent of screen time among adolescents. In joint association analysis, children who did not meet physical activity nor screen time guidelines had 2.52 times higher odds of being overweight/obese than children who met both guidelines. Adolescents who did not meet the screen time guideline had significantly higher odds ratio of being overweight/obese regardless of meeting the physical activity guideline. Meeting the physical activity guideline was also associated with cardiorespiratory fitness regardless of meeting the screen time guideline in adolescents. Screen time is a stronger factor than physical activity in predicting weight status in both children and adolescents, and only physical activity is strongly associated with cardiorespiratory fitness in adolescents. [ABSTRACT FROM AUTHOR]

Purpose:This study evaluates whether physical activity (PA) and sedentary behavior (SB) are influenced by a common mediating relationship.Method:A total of 1,552 participants in 3rd to 12th grade completed an online survey that included assessments of PA at school (PAS), PA at home (PAH), and SB as well as a battery of psychosocial variables (i.e., attraction to PA and perceived competence).Results:Perceived competence had a direct positive effect on PA and a negative effect on SB. These associations were consistently (but partially) mediated by attraction to PA; however, the indirect effect (IE) of perceived competence was stronger for PAH (IE = .27,p < .05) than for PAS (IE = .07,p < .05), or SB (IE = .13,p < .05).Conclusions:This study revealed some direct effects and IEs of perceived competence on PAS, PAH, and SB through attraction to PA as the mediator. PA and SB may be influenced by some common underlying psychosocial mediators. [ABSTRACT FROM PUBLISHER]

Background: SWITCH® is an evidence-based childhood obesity prevention program that works through schools to impact parenting practices. The present study was designed as a formative evaluation to test whether an online version of SWITCH® would work equivalently as the established print version. Methods: Ten elementary schools were matched by socio-economic status and randomly assigned to receive either the print (n = 5) or online (n = 5) version. A total of 211 children from 22, 3rd grade classrooms were guided through the 4 month program by a team of program leaders working in cooperation with the classroom teachers. Children were tasked with completing weekly SWITCH® Trackers with their parents to monitor goal setting efforts in showing positive Do (=60 minutes of moderate-to-vigorous physical activity), View (=2 hours of screen time), and Chew (=5 servings of fruits and vegetables) behaviors on each day. A total of 91 parents completed a brief survey to assess project-specific interactions with their child and the impact on their behaviors. Results: The majority of parents (93.2%) reported satisfactory experiences with either the online or print SWITCH® program. The return rate for the SWITCH® Trackers was higher (42.5% ± 11%) from the print schools compared to the online schools (27.4% ± 10.9%). District program managers rated the level of teacher engagement in regards to program facilitation and the results showed a higher Trackers return rate in the highly engaged schools (38.5% ± 13.3%) than the lowly engaged schools (28.6 ± 11.9%). No significant differences were observed in parent/child interactions or reported behavior change (ps > .05) suggesting the equivalence in intervention effect for print and online versions of the SWITCH® program. Conclusions: The findings support the utility of the online SWITCH® platform but school-based modules are needed to facilitate broader school engagement by classroom teachers and PE teachers. [ABSTRACT FROM AUTHOR]

Purpose:A primary goal of physical education is to develop physically literate individuals with the knowledge, skills, and confidence necessary for a physically active lifestyle. Guided by the expectancy-value and interest motivation theories, the purpose of this study was to identify the relationship between students' motivation and health-related fitness knowledge developed in physical education and their after-school physical activity participation.Method:Third-, 4th-, and 5th-grade students (N = 293) from 6 elementary schools in a large metropolitan school district in the United States provided data on expectancy beliefs and perceived task values, situational interest, health-related fitness knowledge, and after-school physical activity. Data were analyzed using descriptive statistics and a simultaneous multiple regression model.Results:It was found that expectancy beliefs (β = .20,t = 2.16,p = .03) and perceived exploration demand (β = .25,t = 2.58,p = .01), a source for situational interest, were positively related to after-school physical activity. The 2 variables, however, accounted for only 11.2% of the variances for children's after-school physical activity participation.Conclusion:This study demonstrates that students' active exploration and expectancy beliefs for success in physical education have limited influence on leisure-time physical activity participation. [ABSTRACT FROM PUBLISHER]

As the prevalence of childhood obesity increases, it is important to examine possible differences in psychosocial correlates of physical activity between normal weight and overweight children. The study examined fatness (weight status) and (aerobic) fitness as Enabling factors related to youth physical activity within the Youth Physical Activity Promotion Model (YPAP). Youth ages 9–11 years (N= 1,103) completed the Children’s Physical Activity Correlates survey and the Children’s Physical Activity Questionnaire. Structural equation modeling was used to analyze the relationships among variables. Overweight children reported lower scores on global self-esteem, perceived competence, attraction to physical activity, and parental influence (Cohen’sdranging from .23 to .45 for girls; Cohen’sdranging from .31 to .43 for boys). Weight status showed a small positive direct effect on physical activity (standardized path coefficient = .11), but did not show effects on psychosocial correlates (p> .05). Furthermore, aerobic fitness proved to be a stronger Enabling factor (standardized path coefficient = .26) than weight status within the YPAP model. Future research using the YPAP model may extend its utility as an evaluation framework for youth physical activity intervention studies. [ABSTRACT FROM AUTHOR]

Abstract: Viscosity plays an important role in regular bubble entrapment during drop impact into a deep pool. In this paper, the volume of fluid (VOF) model in conjunction with the continuum surface force (CSF) model is used to investigate the dynamics of regular bubble entrapment in fluids with a range of viscosities (η=0.1–10.0×10−3 Pas). Time evolutions of the crater profiles and crater depths in different viscous fluids are compared. Numerical results show that the damping effect of the viscosity on capillary wave propagation leads to an increase in the lower limit of the regular bubble entrapment region, whereas the damping effect on crater cusp reversal dynamics leads to an increase in the upper limit. Based on the timing estimate, a scaling model for the effect of viscosity on the limits of the regular bubble entrapment region is provided. Finally, the distribution of bubble size as a function of the capillary number is investigated. [Copyright &y& Elsevier]

Abstract: Physical education and health education are relevant avenues for adolescents to learn knowledge and behavior related to energy-balanced living. Grounded in the framework theory of conceptual change, this study examined ninth graders' energy balance knowledge (i.e., concepts, principles, and strategies underlying the scientific mechanism and the outcome of energy balanced/imbalanced living) and physical activity in a healthful-living curriculum (i.e. combination of physical education and health). The students (N =195) were measured using concept mapping, accelerometers, and three-day physical activity recall. It was found that the students differed in energy balance knowledge where most (83%) lacked a higher-order relational understanding. Physical activity in physical education class or after school did not significantly differ by students' mental model levels concerning energy balance knowledge. The findings suggest that an ecological learning context with moderate physical activity should be provided to help students make sense of energy balance knowledge through lived experiences. [Copyright &y& Elsevier]

Motivation to learn is a disposition developed through exposure to learning opportunities. Guided by the expectancy-value theory of Eccles and Wigfield (1995), this study examined the extent to which expectancy belief and task value influenced elementary school students’ physical activity and knowledge learning in physical education (PE). Students (N = 753) from 15 US public schools contributed student-level and class-level data. With a 2-level design, the data were analyzed using hierarchical linear modeling. Physical activity (t = 3.18; p < .01) positively predicted fitness knowledge. Attainment value (i.e. perception of importance) as the only expectancy-value construct, significantly predicted fitness knowledge (t = 3.07; p < .01), when physical activity was held constant. As the physical activity intensity increased, the positive prediction of attainment value to knowledge attenuated and then turned negative (t = –3.10; p < .01). The study indicated that although a physically-active context helps students to make sense of fitness knowledge, a vigorous context shifts their motivation away from cognitive learning, toward physical participation. To resolve the difficulty of attaining learning objectives both physically and cognitively, PE teachers may want to maintain an active learning context with moderate physical intensity. Future research should address the effect of learner motivation on dual or multiple learning outcomes in PE. [ABSTRACT FROM AUTHOR]

In this study, we had two inter-related goals: (a) to examine sex and minority status differences on children's motivation for physical education (PE; i.e., their expectancy beliefs, subjective task values, and situational interest) and their psychomotor learning outcomes (i.e., motor competence, cardiorespiratory fitness, and in-class physical activity); and (b) to examine the relationships between children's motivation and their psychomotor learning outcomes while testing the moderation effects of sex and minority status. We recruited 195 fourth and fifth-grade students (101 boys; 94 girls; M age = 10.7, SD = 0.7 years) from three elementary schools in North Texas. Using multivariate analysis of variance, we identified a significant sex difference that favored boys in motivation and psychomotor learning outcomes, with no significant minority status difference in relation to these variables. Regression analysis revealed that children's expectancy beliefs were significantly associated with both motor competence (R 2 = 11%) and cardiorespiratory fitness (R 2 = 16%), while both situational interest and sex were associated with in-class physical activity (R 2 = 18%). Thus, improving children's expectancy beliefs may be a means of enhancing psychomotor learning outcomes in PE, especially for girls. Enhancing children's beliefs in their own ability and offering diversified PE content so as to generate greater interest may facilitate psychomotor learning. [ABSTRACT FROM AUTHOR]

Background: There is a need to identify strategies that enhance the implementation of evidence-based school wellness intervention programs in real-world settings. The present study evaluates the feasibility of empowering school wellness leaders to deliver an evidence-based, childhood obesity-prevention program called Switch ™. We specifically evaluated the feasibility of a new implementation framework, based on the robust Healthy Youth Places framework, to increase capacity of school leaders to lead school wellness programming.Methods: The SWITCH (School Wellness Integration Targeting Child Health) implementation process was evaluated in a convenience sample of eight Iowa elementary schools. Teams of three leaders from each school attended an in-person school wellness conference followed by five online webinar sessions delivered by two SWITCH team members. The capacity-building and quality improvement process was designed to empower schools to lead wellness change using methods and concepts from the original 16-week Switch ™ program. School wellness leaders completed checklists on two occasions to assess overall school-level implementation as well as setting-level changes in physical education, classrooms, and the lunchroom. Student acceptability of SWITCH was evaluated by the degree of behavior tracking using an online SWITCH Tracker system that promoted self-monitoring. School acceptability and practicality were assessed through an exit survey completed by school leaders.Results: All school staff reported satisfaction with the SWITCH implementation process. Reports of school- and setting-level implementation were relatively high (2.0 to 2.8 on a 3-point scale) but student engagement, based on use of the online tracking system, varied greatly over time and across schools. Three high implementation schools had average tracking rates exceeding 70% (range: 72-90%) while three low implementation schools had rates lower than 30% (range = 0-23%).Conclusions: This feasibility study supports the utility of the new implementation framework for promoting school and student engagement with SWITCH. Further testing regarding effectiveness and scale-up of this evidence-based school wellness intervention program is warranted. [ABSTRACT FROM AUTHOR]

Background: The purpose of this study was to examine the effects of cardiorespiratory fitness and weight status on knowledge of physical activity and fitness (PAF knowledge), attitude toward physical education (PE), and physical activity.Methods: A total of 343 middle school students participated in the study (Age: M/SD = 12.76/.94, ranging from 11 to 14 years old). PE Metrics™ was used to measure PAF knowledge, and Attitude toward Physical Education Questionnaire and Youth Activity Profile were used to measure attitude, physical activity and sedentary behavior. Fitness and weight status were assessed using FitnessGram and converted to in Healthy Fitness Zone (HFZ) or Not in HFZ.Results: Two-way multivariate analyses of covariance (MANCOVA; gender and grade as covariates) showed a significant group effect for cardiorespiratory fitness (ΛPilla = .07, F4,255 = 5.03, p = .001, [Formula: see text] = .07) but not for weight status (p = .57). PAF knowledge (F1,258 = 9.49, p < .01, [Formula: see text]= .04), attitude (F1,258 = 4.45, p < .05, [Formula: see text]= .02) and sedentary behavior (F1,258 = 6.89, p < .01, [Formula: see text]= .03) all favored the HFZ group.Conclusions: The findings reinforce the importance of promoting cardiorespiratory fitness in middle school PE as students acquire attitude, knowledge, and behaviors needed for active-living. [ABSTRACT FROM AUTHOR]

Background: School physical education (PE) is considered as an effective channel for youth to accumulate moderate-to-vigorous physical activity (MVPA) and reduce sedentary time. The purpose of this study was to determine the contributing role of PE in daily MVPA and sedentary time among youth.Methods: The study recruited 67 sixth grade children (29 boys; Mean age = 11.75) from two suburban schools at a U.S. Midwest state, 48 of whom contributed ≥10 hours of physical activity (PA) data per day were included for analysis. An objective monitoring tool (i.e., Sensewear armband monitor) was used to capture the participants' MVPA and sedentary time for 7-14 days. Pearson product-moment correlation analysis (r), multi-level regression analyses, and analysis of variance were conducted for data analysis.Results: MVPA and sedentary time in PE showed significant positive associations with daily MVPA and sedentary time, respectively (r = 0.35, p < 0.01; r = 0.55, p < 0.01). Regression analyses revealed that one minute increase in MVPA and sedentary behavior in PE was associated with 2.04 minutes and 5.30 minutes increases in daily MVPA and sedentary behavior, respectively, after controlling for sex and BMI. The participants demonstrated a significantly higher level of MVPA (p = .05) but similar sedentary time (p = 0.61) on PE days than on non-PE days. Boys had significantly more daily MVPA (p < .01) and less sedentary time (p < .01) than girls; while higher BMI was associated with more sedentary time (p < .01).Conclusions: PE displayed a positive contribution to increasing daily MVPA and decreasing daily sedentary time among youth. Active participation in PE classes increases the chance to be more active and less sedentary beyond PE among youth. [ABSTRACT FROM AUTHOR]

This study examined the effects of using Physical Best lessons to promote adolescent energy balance knowledge and task values. Seventh graders (N = 90) were randomly assigned to the experiment and the comparison groups. The experiment group took 10 selected Physical Best lessons, while the comparison experienced 10 district lessons. Pre- and post-measurements of knowledge and task values were taken at the beginning and the end of the experiment. Analysis of covariance and multivariate analysis of variance were conducted to test the difference over time and between the groups in energy balance knowledge test scores and task values. Both groups improved knowledge test scores, but the experiment group scored significantly higher than the comparison, controlling for the pre-test. The comparison group reported higher initial attainment values which declined over time, while the experiment group increased. The findings suggested that Physical Best lessons were effective (ηp 2=.18) in improving students’ energy balance knowledge in 10 structured lessons, and that students reported a higher perceived value about the importance of physical education after they learned energy balance and exercise principles. Perhaps these concepts should be taught in physical education to improve student knowledge and perceived values of the subject. [ABSTRACT FROM AUTHOR]

Organic Rankine cycle has been regarded as a reasonable technology to utilize low-temperature geothermal sources. This paper analyzes the internal relation about zeotropic mixture selection under different restrictive conditions. R601a/R600 and R245fa/R600a are selected as typical examples of symmetrical and asymmetric zeotropic mixtures. The fixed condenser bubble temperature, the fixed cooling water temperature rise and the fixed cooling water flow rate are considered as restrictive conditions. Both the basic and the regenerative organic Rankine cycle system are considered as research subjects. The fixed cooling water flow rate is suggested to select the appropriate zeotropic mixture. The results indicate that the performance corves with the fixed condenser bubble temperature of 25 °C are significant in zeotropic mixture selection, and these corves reflect the full potential of zeotropic mixtures to improve the net power. The temperature glide decreases the net power with the fixed condenser bubble temperature. However, the opposite phenomenon is found when the fixed cooling water temperature rise or the fixed cooling water flow rate is applied. The application of intermediate heat exchangers may lead to the larger, the smaller or the same net power with different temperature glides and restrictive conditions. However, the cycle efficiency is increased all the time. [ABSTRACT FROM AUTHOR]

Comprehensive school physical activity programs (CSPAP) offer many opportunities for children and adolescents to be physically active. CSPAP implementation is challenging, especially during the COVID-19 pandemic. In this article, we define physical activity opportunity (PAO), identify the common sources of PAOs, and conclude with a set of strategies for offering and optimizing PAOs in and beyond schools. Effective physical activity and wellness promotion takes collective initiatives by stakeholders, in and beyond schools. [ABSTRACT FROM AUTHOR]

Introduction: As the frequency of infectious diseases rises, it's more important than ever to pay attention to the competency level of front-line nurses as the primary force in front-line rescue, which has an impact on the quality of anti-epidemic response. This paper aims to construct the competency evaluation index system for front-line nurses during the outbreak of major infectious diseases. Materials and methods: This study combined literature review, critical incident technique interviews, and semi-structured in-depth interviews, as well as two rounds of Delphi expert correspondence, to construct a competence evaluation index system for front-line nurses during the outbreak of major infectious diseases. The study used purposive sampling to select 26 experts from 11 provinces and cities across China to conduct two rounds of Delphi expert consultation, and the indicators were selected based on the mean importance score > 3.5 and the coefficient of variation < 0.25, and the weights of the indicators were calculated by the Analytic Hierarchy Process. The effective recovery rates of the two rounds of correspondence questionnaires were 93.1% and 96%. Results: The effective recovery rates of the two rounds of correspondence questionnaires were 93.1% and 96%, the authority coefficients of experts were 0.96 and 0.98, the Kendall's coordination coefficients of the first, second, and third level indexes were 0.281, 0.132, and 0.285 (P < 0.001), 0.259, 0.158, and 0.415 (P < 0.001). The final index system includes 4 primary indicators (Knowledge System of Infectious Diseases, Nursing Skills for Infectious Diseases, Related Professional Abilities for Infectious Diseases, and Comprehensive Quality), 10 secondary indicators, and 64 tertiary indicators. Conclusion: The competency evaluation index system of front-line nurses during the outbreak of major infectious diseases is scientific, reasonable, and practical, which can provide a scientific basis for nursing managers to accurately understand, describe, analyze, and evaluate the competence level of nursing staff and scientifically implement the allocation of human resources in the future, as well as serve as a content framework for subsequent training programs. [ABSTRACT FROM AUTHOR]

In physical education, it has become necessary for children to learn kinesiological knowledge for understanding the benefits of physical activity and developing a physically active lifestyle. This study was conducted to determine the extent to which cognitive assignments about healthful living and fitness contributed to knowledge growth on cardiorespiratory fitness and health. Fourth grade students (N = 616) from 15 randomly sampled urban elementary schools completed 34 cognitive assignments related to the cardiorespiratory physical activities they were engaged in across 10 lessons. Performance on the assignments were analyzed in relation to their knowledge gain measured using a standardized knowledge test. A multivariate discriminant analysis revealed that the cognitive assignments contributed to knowledge gain but the contribution varied assignment by assignment. A multiple regression analysis indicated that students’ assignment performance by lesson contributed positively to their knowledge growth scores. A content analysis based on the constructivist learning framework showed that observing–reasoning assignments contributed the most to knowledge growth. Analytical and analytical–application assignments contributed less than the constructivist theories would predict. [ABSTRACT FROM PUBLISHER]

High performance CoCrFeNiW 0.2 and CoCrFeNiW 0.2 + 3 at% C HEAs were prepared by vacuum arc melting, which are promising candidates for extreme environment applications. To study the current-carrying wear behavior of the two HEAs under different current conditions, a pin-on-ring test rig was custom-designed. The microstructures, hardness, wear properties and mechanisms of the HEAs were investigated. The results reveal that the HEAs exhibit outstanding wear resistance in the absence of current, as evidenced by the very low wear rates and the relatively smooth worn surfaces. With the increasing of current intensity, it simultaneously exacerbates the abrasive wear, adhesive wear, oxidative wear and arc erosion. The HEAs show the worst wear resistance due to the melt ejection and arc discharge at 10 A. However, when the current reaches 20 A, the elevated temperature promotes material transfer and the formation of dense and complete oxide film, which has lubricating and protective effect to separate the worn surfaces, resulting in the reduction of COFs and wear rates. The rupture and regeneration of oxide film play an opposite effect on sliding contact friction, and their competitive relationship dominates the wear resistance of the HEAs under the large current. The CoCrFeNiW 0.2 + 3 at% C HEA exhibits superior wear resistance than CoCrFeNiW 0.2 HEA under various conditions because the WC carbide is harder than μ phase particle and can impede plastic deformation of FCC matrix during tribological process more efficiently. [ABSTRACT FROM AUTHOR]

Subway stations are typically equipped with fresh air shafts to introduce outdoor air, while the surrounding rock and air channels form a vertical earth-air heat exchanger (VEAHE). This study is the first to analyze the year-round thermal storage and exothermic characteristics of the surrounding rock. A numerical model was developed, incorporating ground surface heat transfer and axial heat transfer within the rock. The simulation results aligned well with field test data. This model was then utilized to explore the thermal storage and release properties of the surrounding rock. The findings revealed that both z-directional and r-directional annual temperature wave affect the enclosing rock. The monthly average natural energy efficiency (NEE) and storage efficiency (SE) were determined to be 10.75% and 17.47%, respectively. Notably, the shallow rock exhibited the highest NEE but the lowest SE. The energy used for fresh air pre-treatment derives not only from the rock's current annual cycle but also from previously stored energy. Lastly, λ sr and c were identified as major influencers of NEE, while λ sr , c , and the burial depth of the shaft collectively impact the air pre-treatment process in the shaft. The findings contribute to further understanding of the thermal process in VEAHE systems. • A more comprehensive and accurate numerical model was developed. • First analyzed the thermal storage and release characteristics of the enclosing rock. • Studied the efficiency of the thermal storage and release of the surrounding rock. • Investigated the factors influencing thermal storage and release of the surrounding rock. [ABSTRACT FROM AUTHOR]

• The alterations in dFC and SC networks unveil distinct characteristics associated with cLBP. • The enhanced connectivity between the FPN, SMN and thalamus signifies the most relevant changes in brain networks associated with cLBP. • The integration of different features effectively enhances the classification accuracy between cLBP patients and HC. The prolonged duration of chronic low back pain (cLBP) inevitably leads to changes in the cognitive, attentional, sensory and emotional processing brain regions. Currently, it remains unclear how these alterations are manifested in the interplay between brain functional and structural networks. This study aimed to predict the Oswestry Disability Index (ODI) in cLBP patients using multimodal brain magnetic resonance imaging (MRI) data and identified the most significant features within the multimodal networks to aid in distinguishing patients from healthy controls (HCs). We constructed dynamic functional connectivity (dFC) and structural connectivity (SC) networks for all participants (n = 112) and employed the Connectome-based Predictive Modeling (CPM) approach to predict ODI scores, utilizing various feature selection thresholds to identify the most significant network change features in dFC and SC outcomes. Subsequently, we utilized these significant features for optimal classifier selection and the integration of multimodal features. The results revealed enhanced connectivity among the frontoparietal network (FPN), somatomotor network (SMN) and thalamus in cLBP patients compared to HCs. The thalamus transmits pain-related sensations and emotions to the cortical areas through the dorsolateral prefrontal cortex (dlPFC) and primary somatosensory cortex (SI), leading to alterations in whole-brain network functionality and structure. Regarding the model selection for the classifier, we found that Support Vector Machine (SVM) best fit these significant network features. The combined model based on dFC and SC features significantly improved classification performance between cLBP patients and HCs (AUC=0.9772). Finally, the results from an external validation set support our hypotheses and provide insights into the potential applicability of the model in real-world scenarios. Our discovery of enhanced connectivity between the thalamus and both the dlPFC (FPN) and SI (SMN) provides a valuable supplement to prior research on cLBP. [ABSTRACT FROM AUTHOR]

This study aimed to examine the effects of yoga and physical fitness exercises on stress and the underlying mechanisms. Participants: Healthy undergraduates from four yoga and four fitness classes participated in Study 1 (n = 191) and Study 2 (n = 143), respectively (in 2017 Fall). Methods: Study 1 evaluated the immediate effect (a 60-minute practice) while Study 2 evaluated the durable effect (a 12-week intervention). Results: Results showed that immediate stress reduction was more salient in the yoga group than that in the fitness group in Study 1. Yoga group had a greater increase in mindfulness, which predicted stress reduction. Similar observations were made in Study 2 showing the durable effect of yoga on stress reduction through mindfulness. Conclusions: Yoga intervention is better than fitness exercises in helping undergraduates cultivate mindfulness and reduce stress. These findings may guide future interventions in stress management in college students. [ABSTRACT FROM AUTHOR]

Neuroimaging research has revealed significant changes in brain structure and function in patients with cervical spondylotic myelopathy(CSM). The thalamus plays a crucial role in this process, although its mechanisms of action remain incompletely understood. This study aimed to investigate whether spinal cord compression leads to alterations in the functional connectivity between the thalamus and the cerebral cortex, and to determine if such changes are associated with structural and functional remodeling of the brain in patients with CSM, and to identify potential neuroimaging biomarkers for classification. The study included 40 patients with CSM and 34 healthy controls(HCs) who underwent resting-state functional magnetic resonance imaging(fMRI) and structural MRI scans. Brain structural and functional metrics were quantified using functional connectivity(FC), fractional amplitude of low-frequency fluctuations(fALFF), surface-based morphometry(SBM), and independent component analysis(ICA) based on functional and structural MRI. Patients with CSM exhibited significantly reduced fALFF in the bilateral lateral lingual gyrus, bilateral calcarine fissure, left precentral gyrus and postcentral gyrus, left middle and superior occipital gyrus, left superior marginal gyrus, left inferior parietal gyrus, and right Rolandic operculum. ICA results revealed weakened functional connectivity between the sensorimotor network (SMN) and the left and right frontoparietal network(FPN), and lateral visual network (lVN), along with decreased connectivity between lVN and rFPN, and increased connectivity between lFPN and rFPN. Patients with CSM also had decreased sulcus depth in the bilateral insula, left precentral and postcentral gyrus, and right lingual gyrus and calcarine fissure. Furthermore, cervical spondylotic myelopathy patients showed decreased functional connectivity between the left ventral posterolateral nucleus (VPL) of the thalamus and the right middle occipital gyrus (MOG). Finally,multimodal neuroimaging with support vector machine(SVM) classified patients with CSM and healthy controls with 86.00% accuracy. Our study revealed that the decrease in functional connectivity between the thalamus and cortex mediated by spinal cord compression leads to structural and functional reorganization of the cortex. Features based on neuroimaging markers have the potential to become neuroimaging biomarkers for CSM. • CSM patients exhibit significant alterations in both brain structure and function. • Reduced thalamo-cortical synchronization in CSM patients mediates brain remodeling. • Neuroimaging metrics with SVM can accurately classify CSM patients and healthy controls. [ABSTRACT FROM AUTHOR]

Background: School wellness programming is important for promoting healthy lifestyles and academic achievement in youth; however, research is needed on methods that can help schools implement and sustain such programs on their own. The purpose of this study was to investigate factors within and outside the school environment that influenced school capacity for implementation and potential sustainability of wellness programming. Methods: As part of the School Wellness Integration Targeting Child Health (SWITCH®) intervention, elementary school wellness teams (N = 30) were guided through a capacity-building process focused on promoting the adoption of healthy lifestyle behaviors in students. Data on implementation were collected through three standardized surveys and interviews (pre-mid-post) and a post-implementation interview. Indicators of organizational capacity were assessed using the School Wellness Readiness Assessment (SWRA). Paired t-tests were run to assess changes in implementation (classroom, physical education, and lunchroom settings), capacity, and stakeholder engagement over time. One-way analysis of variance (ANOVA) tests were run to examine how implementation of best practices (low, moderate, high) explained differences in capacity gains. Qualitative data were analyzed through inductive and deductive analysis, following the Consolidated Framework for Implementation Research (CFIR). Results: Paired t-tests showed non-significant increases in school and setting-specific capacity and implementation of SWITCH best practices over time, in addition to a consistent level of engagement from key stakeholders. ANOVA results revealed non-significant associations between implementation group and gains in school capacity (F [2, 24] = 1.63; p =.21), class capacity (F [2, 24]=0.20 p =.82), lunchroom capacity (F [2, 24]=0.29; p =.78), and physical education (F [2, 24]=1.45; p =.25). Qualitative data demonstrated that factors within the outer setting (i.e., engaging community partners) facilitated programming. Inner-setting factors (i.e., relationships with administration and staff) influenced implementation. Implementation process themes (e.g., planning, adaptation of resources to meet school capacity/needs, and engaging students as leaders) were cited as key facilitators. Schools discussed factors affecting sustainability, such as school culture and knowledge of school wellness policy. Conclusions: The results from this implementation study document the importance of allowing schools to adapt programming to meet their local needs, and highlight the strengths of measuring multiple implementation outcomes. Increased support is needed for schools regarding the formation and improvement of wellness policies as a means to enhance sustainability over time. [ABSTRACT FROM AUTHOR]

• Study the co-oxidation behavior of methanol on ammonia in supercritical water. • The synergy between kinetics and thermal actions of methanol on ammonia. • Examine the influence of reaction conditions and the formation of nitrate. • Compare methanol and isopropanol by positive effect and exothermic behavior. The co-oxidation behavior of methanol on ammonia in supercritical water was investigated in a continuous tubular reactor under a range of methanol concentration (10–800 mmol/L), ammonia concentration (50–400 mmol/L), oxidation coefficient (1.05–1.7) and preheating temperature of 400 and 415 °C. Calculation based on a mechanism-based model for supercritical water oxidation of methanol/ammonia showed that the synergy between the kinetics action to supply radicals and the thermal action to elevate the reaction temperature of methanol would improve the efficient decomposition of ammonia at relatively moderate reaction conditions. Specifically, near complete conversion of ammonia (97.5%) can be achieved at [CH 3 OH] 0 = 800 mmol/L, preheating temperature of 415 °C and oxidation coefficient of 1.5. The influence of reaction conditions on the co-oxidation behavior and the formation of nitrate were examined experimentally. Methanol and isopropanol served as the auxiliary fuel for ammonia were compared by the positive effect and exothermic performance, which reached that methanol was superior to isopropanol. [ABSTRACT FROM AUTHOR]

Effect of xanthan gum (XG) on the walnut protein/xanthan gum mixtures (WP/XG, 1.2 wt% WP and 0–0.30 wt% XG), interfacial adsorption and emulsions properties was studied. As XG concentrations increased, the aqueous solutions of WP/XG mixtures were clear at pH 7.0 as shown by phase diagram, however, bigger hydrodynamic diameter ( D H ) and lower negative ζ-potential were observed which might be resulted from the formation of the co-solubilized WP/XG mixtures induced by electrostatic and hydrophobic interactions. As adsorption time prolonged, interfacial pressure (π), dilatational modulus (E), and dilatational elasticity (E d ) continuously increased, diffusion rate ( k diff ) firstly increased and then decreased, inversely, penetration rate ( k P ), rearrangement rate ( k R ), dilatational viscosity (E v ) and loss-angle tangent (tanθ) decreased. These results indicated that XG promoted WP molecules to be continuously adsorbed to oil-water interface and formed firmer elastic interfacial films, possibly due to lower thermodynamic compatibility or higher viscosity. The oil droplets in emulsions stabilized by WP/XG mixtures had larger d 4,3 and lower negative ζ-potential, and flocs were observed by CLSM images, which might be related to the adsorption of WP. Emulsions exhibited pseudo-plastic and shear-thinning properties by flow behavior measurements, and emulsions stability presented by creaming index ( CI ) was firstly decreased caused by flocs and then increased due to higher viscosity. [ABSTRACT FROM AUTHOR]

Comprehensive school physical activity programs (CSPAPs) aim to promote physical activity and healthy lifestyles among school-age children and adolescents. Physical educators are highly qualified individuals taking on the role of certified physical activity leaders. Physical education teacher education (PETE) programs should consider preparing physical educators with sufficient knowledge and skills to implement a CSPAP and to foster physically literate individuals. This article describes the competencies needed for physical educators to implement CSPAP and synthesizes strategies and recommendations for infusing CSPAP concepts into PETE programs. [ABSTRACT FROM AUTHOR]

The high-value utilization of agricultural and forestry waste holds the promise of alleviating the issues of energy crisis. Among them, the manufacturing of high-performance supercapacitor electrode materials from tobacco waste biomass is a reliable avenue. In this work, tobacco-stem-derived hierarchical porous carbon (TS-HPC) was prepared by one-pot ball milling and carbonization using calcium carbonate (CaCO 3) and potassium oxalate (K 2 C 2 O 4) as mild activating agents. Due to the synergistic activation of CaCO 3 and K 2 C 2 O 4 , the specific surface area of TS-HPC is 2749 m2/g. TS-HPC with the hierarchical porous structure greatly shows an excellent specific capacitance (402 F/g at 0.5 A/g) in the three-electrode configuration. In addition, symmetric supercapacitor based on TS-HPC exhibits 10.2 W h/kg energy density at 150.0 W/kg power density, together with outstanding cycling stability (remains 97.8% after 10,000 cycles). Moreover, we demonstrated that the gas exfoliation of CaCO 3 and K 2 C 2 O 4 could contribute to the formation of hierarchical porous structures with a synergistic activation effect. This work could provide a new perspective on the preparation of biomass-derived carbon as electrode for supercapacitors. [Display omitted] • Tobacco stem-derived carbon was prepared by one-pot ball milling and carbonization. • TS-HPC exhibits a high specific surface area of 2749 m2/g. • The synergistic gas exfoliation effect results superior pore size distribution. • TS-HPC shows high specific capacitance of 402 F/g. [ABSTRACT FROM AUTHOR]

• A comprehensive measure of model predictability signature is developed. • A list of satellite, reanalysis and ground-based precipitation products is assessed. • BATEA excels MCMC for indirect measurements of precipitation in general. • Model predictability signature has potential on merging precipitation estimates. Quantifying and reducing the errors and uncertainties in high-resolution gridded precipitation products are essential for hydrological modelling to generate realistic parameter estimates and accurate model predictions. Formal Bayesian inference provides a powerful tool to quantify rainfall uncertainty and other uncertainty factors in hydrological modelling. An efficient way to reduce rainfall uncertainty in hydrological modelling is to merge precipitation estimates from multiple sources prior to their real-world applications. However, it remains a challenging task to optimally determine the weightings of different precipitation estimates based on the predictive ability of a hydrological model, especially from a probabilistic perspective. This study addresses this issue by evaluating and merging six gridded precipitation products using formal Bayesian inference schemes, including the Markov Chain Monte Carlo (MCMC) approach and Bayesian total error analysis (BATEA). MCMC describes the total predictive uncertainty using residual error models. In contrast, BATEA utilizes the storm depth multiplier approach to separately account for rainfall uncertainty in probabilistic uncertainty quantification. A novel signature of model predictability that combines the reliability and precision of probabilistic model predictions is developed to quantify the predictive ability of a hydrological model from precipitation estimates. Using the proposed predictability signature, we examined the benefit of optimally merging multi-source precipitation estimates in improving the accuracy of hydrologic simulations by applying the method to the Danjiangkou Reservoir region (DRR) between 1998 and 2007. The analysis demonstrates that (1) BATEA, compared to MCMC, can provide more realistic estimates of model parameters and tighter predictive intervals of daily streamflow when using rain gauge observations as well as gridded precipitation products; and (2) the proposed predictability signature is efficient for optimally merging precipitation measurements as it can produce tighter uncertainty bands and better streamflow simulations than individual precipitation estimates. This study provides insights into improved quantification and reduction of uncertainty in multi-source precipitation products for hydrological modelling. [ABSTRACT FROM AUTHOR]

• A comprehensive measure of model predictability signature is developed. • A list of satellite, reanalysis and ground-based precipitation products is assessed. • BATEA excels MCMC for indirect measurements of precipitation in general. • Model predictability signature has potential on merging precipitation estimates. Quantifying and reducing the errors and uncertainties in high-resolution gridded precipitation products are essential for hydrological modelling to generate realistic parameter estimates and accurate model predictions. Formal Bayesian inference provides a powerful tool to quantify rainfall uncertainty and other uncertainty factors in hydrological modelling. An efficient way to reduce rainfall uncertainty in hydrological modelling is to merge precipitation estimates from multiple sources prior to their real-world applications. However, it remains a challenging task to optimally determine the weightings of different precipitation estimates based on the predictive ability of a hydrological model, especially from a probabilistic perspective. This study addresses this issue by evaluating and merging six gridded precipitation products using formal Bayesian inference schemes, including the Markov Chain Monte Carlo (MCMC) approach and Bayesian total error analysis (BATEA). MCMC describes the total predictive uncertainty using residual error models. In contrast, BATEA utilizes the storm depth multiplier approach to separately account for rainfall uncertainty in probabilistic uncertainty quantification. A novel signature of model predictability that combines the reliability and precision of probabilistic model predictions is developed to quantify the predictive ability of a hydrological model from precipitation estimates. Using the proposed predictability signature, we examined the benefit of optimally merging multi-source precipitation estimates in improving the accuracy of hydrologic simulations by applying the method to the Danjiangkou Reservoir region (DRR) between 1998 and 2007. The analysis demonstrates that (1) BATEA, compared to MCMC, can provide more realistic estimates of model parameters and tighter predictive intervals of daily streamflow when using rain gauge observations as well as gridded precipitation products; and (2) the proposed predictability signature is efficient for optimally merging precipitation measurements as it can produce tighter uncertainty bands and better streamflow simulations than individual precipitation estimates. This study provides insights into improved quantification and reduction of uncertainty in multi-source precipitation products for hydrological modelling. [ABSTRACT FROM AUTHOR]

Biomarkers for the diagnosis, prognosis, and targeting therapy of gallbladder cancers are not clinically available. This study demonstrated that the percentage of cases with positive SHP2 and UGP2 expression significantly correlated with the percentage of cases with positive vimentin, β-catenin, MMP2, MMP9, and Ki-67 expression, large tumor size, high TNM stage, lymph node metastasis, and survival in patients with adenocarcinomas and squamous cell/adenosquamous carcinomas. Positive SHP2 and UGP2 expression are independent poor-prognostic factors in both types of tumors. Our study suggested that positive SHP2 and UGP2 expression correlated with clinicopathological and biological behaviors, and poor-prognosis of gallbladder cancer. [ABSTRACT FROM PUBLISHER]

Background: The County Health Rankings (CHR) system provides health rankings for U.S. counties. These factors may have utility for evaluating and predicting health outcomes. This study examined the association between CHR factors and the prevalence of child overweight/obesity (OWOB) in the state of Pennsylvania over 3 years.Methods: The prevalence of childhood OWOB was obtained for all Pennsylvania school districts for the 2009-10 through 2011-12 school years. Correlational and inferential statistical analyses were used to examine the associations between the prevalence of OWOB in grades K-6 (OWOB1) and 7-12 (OWOB2) and z-score for the overall CHR Health Factors rank, as well as for individual predictive factors (Health Behaviors, Clinical Care, Social and Economic Factors and Physical Environment).Results: Low to moderate correlations (0.29-0.43) were found between OWOB1 and CHR factors. Weaker and less consistent correlations were found for adolescents. There was a significantly higher prevalence of OWOB in counties with poorer CHR scores.Conclusions: County-level adult indicators of health are significantly associated with levels of child obesity. Future studies should examine the relationship between CHR and other health outcomes. [ABSTRACT FROM AUTHOR]

Aims Squamous cell/adenosquamous carcinomas ( SC/ ASC) are rare subtypes of gallbladder cancers ( GBCs). Clinical characteristics of SC/ ASC have not been well documented, and no biological markers of GBC carcinogenesis, progression and prognosis are available. Methods and results We measured paxillin and CAIX expression in 46 SC/ ASCs and 80 adenocarcinomas ( ACs) with immunohistochemistry and correlated these data with clinicopathological characteristics. Both paxillin expression and CAIX expression were associated significantly with larger tumours, a higher tumour-node-metastasis ( TNM) stage, lymph node metastasis and invasiveness of SC/ ASC and AC. Univariate Kaplan-Meier analysis confirmed that paxillin and CAIX expression were associated closely with decreased overall survival in SC/ ASC (both P < 0.001) and AC (both P < 0.001). Multivariate Cox regression analysis confirmed that paxillin expression and CAIX expression both independently predicted poor prognosis in SC/ ASC and AC patients. We also noted correlations with survival and tumour differentiation, tumour size, TNM stage, lymph node metastasis, tumour invasiveness and sample procurement methods. Conclusions Paxillin expression and CAIX expression are both related to clinical/biological behaviour and poor prognosis of GBC. [ABSTRACT FROM AUTHOR]

Abstract: Gallbladder cancer (GBC) is a rare, but highly aggressive cancer. The most common type of gallbladder cancer is adenocarcinoma (AC), while squamous cell/adenosquamous carcinoma (SC/ASC) is a rare type of gallbladder cancer. The clinicopathologic and biological characteristics of SC/ASC have not been well documented. In this study, the protein expression of N-cadherin and P-cadherin in 46 SC/ASCs and 80 ACs was measured using immunohistochemistry. We demonstrated that positive N-cadherin and P-cadherin expression were significantly associated with large tumor size, invasion, and lymph node metastasis of both SC/ASC and AC. In contrast, positive N-cadherin and P-cadherin expression were significantly associated with differentiation and TNM stage in only AC. Univariate Kaplan–Meier analysis showed that positive N-cadherin and P-cadherin expression, differentiation, tumor size, TNM stage, invasion, lymph node metastasis, and surgical curability were significantly associated with overall survival in both SC/ASC and AC patients. Multivariate Cox regression analysis showed that positive N-cadherin and P-cadherin expression are independent poor-prognostic factors in both SC/ASC and AC patients. Our study suggested that positive N-cadherin and P-cadherin expression closely correlated with clinicopathological and biological behaviors, and poor-prognosis of gallbladder cancer. [Copyright &y& Elsevier]

Background: The differences in clinical, pathological, and biological characteristics between adenocarcinoma (AC) and squamous cell/adenosquamous carcinoma (SC/ASC) of gallbladder cancer have not been well documented. This study is to compare the clinicopathological characteristics and FGFBP1 and WISP-2 expression between AC and SC/ASC patients. Methods: We examined FGFBP1 and WISP-2 expression in 46 SC/ASC and 80 AC samples using immunohistochemistry and analyzed their correlations with clinicopathological characteristics. Results: SC/ASCs occur more frequently in older patients and often correspond to larger tumor masses than ACs. Positive FGFBP1 and negative WISP-2 expression were significantly associated with lymph node metastasis and invasion of SC/ASCs and ACs. In addition, positive FGFBP1 and negative WISP-2 expression were significantly associated with differentiation and TMN stage in ACs. Univariate Kaplan-Meier analysis showed that either elevated FGFBP1 ( p < 0.001) or lowered WISP-2 ( p < 0.001) expression was closely associated with decreased overall survival in both SC/ASC and AC patients. Multivariate Cox regression analysis showed that positive FGFBP1 expression ( p = 0.001) or negative WISP-2 expression ( p = 0.035 for SC/ASC and p = 0.009 for AC) is an independent predictor of poor prognosis in both SC/ASC and AC patients. We also revealed that differentiation, tumor size, TNM stage, lymph node metastasis, invasion, and surgical procedure were associated with survival of both SC/ASC and AC patients. Conclusion: Our study suggested that the overexpression of FGFBP1 or loss of WISP-2 expression is closely related to the metastasis, invasion and poor prognosis of gallbladder cancer. [ABSTRACT FROM AUTHOR]

Highlights: [•] A new solid phase was used to fabricate large size single domain GdBCO bulk superconductor. [•] Gd2O3 +BaCuO2 were fabricated as the new solid phase source. [•] Jc is increased to 8.6×104 Acm−2 compared with the conventional TSIG process. [•] The experiments costs were reduced by this new modified TSIG technique. [ABSTRACT FROM AUTHOR]

A local-regional power loss analysis method based on multiphase computational fluid dynamics (CFD) simulation results is proposed in this study. This method is used to investigate the energy conversion characteristics of a three-stage electric submersible pump under high inlet gas volume fraction (IGVF) conditions. Results show that the input power and effective power increase first and then decrease along the streamline. When IGVF increases from 0% to 14.5%, the total input power and total effective power decrease by 32.4% and 56.2%, respectively. In particular, the input power and effective power in R4 drop by 62% and 67%, respectively. The high gas volume fraction (GVF) area on the blade pressure surface near the impeller inlet causes the power decrease in R4. However, the input power in R6 increases by 47.5%. This condition is due to a jet flow near the impeller outlet causes the vortex and high GVF area in R6, thereby leading to a high liquid velocity area along the radial direction near the pressure surface of the impeller blade. The kinetic energy of the fluid in the jet region increases rapidly in accordance with Bernoulli equation and is converted into pressure energy in the vortex area. The total power loss increases quickly with IGVF. The power loss near the impeller outlet area at 14.5% IGVF is ten times higher than that of 0% IGVF condition and five times higher than that of 5% IGVF condition. This condition is caused by the large air pockets accompanied by vortices in the area. This work provides a theoretical basis for the design and optimization of the multiphase pump. • Local-regional power loss analysis was used in gas-liquid pump energy conversion. • Energy conversion characteristics at pump surging condition were studied. • The value of input power, effective power and power loss in the area was obtained. • The reason for the decrease of pump work capacity in the area was pointed. • Mechanism of the influence of gas volume fraction on pump work capacity is analyzed. [ABSTRACT FROM AUTHOR]